Instead of today's farm report, I'm bringing you the prospects who are not performing at their expected or hoped for levels. In case you missed it, I did a similar list of those prospects who started 2015 hot last week.
Austin Romine(Scranton): Romine went from competing for the backup position in the Bronx during Spring Training back to Triple-A, where he has struggled to show the Yankees they made a mistake in giving the spot to John Ryan Murphy. In fourteen games in April, Romine hit .192/.288/.365. He isn't hitting much at all, but when he connects he is making a difference. Of his ten hits in April, seven were extra base hits (six doubles and a homer). He picked up six RBIs and drew six walks as well.

Tyler Austin(Scranton): Austin really struggled at the plate in April, hitting .213/.238/.275. He had just one homer and two doubles. Perhaps most telling is his 22 strikeouts, with only three walks. After an even slower start to May, Austin's average has slipped below .200 and he has already added ten more strikeouts.

Gary Sanchez(Trenton): Much like Romine, Sanchez is another top Yankees catching prospect who is massively underachieving right now. Sanchez, who owns a hitting line of .272/.339/.447 in the minors, hit just .246/.328/.351 in April. He had three doubles and just one homer, drawing seven walks and striking out seventeen times. The reason Sanchez has been so highly touted has always had a lot to do with his bat, as his ability to stick behind the plate defensively has always been suspect.

Cito Culver(Trenton): A part of me thinks I should rename these posts the Cito Culver list, as he has pretty much owned it since he was drafted. I want to see this kid do well, I really do, but, despite his defensive ability, his offense never seems to quite catch up. He shows just enough promise to stick around, but overall he has consistently struggled at the plate. He went .164/.176/.254 in April, though he made his hits count with nine RBIs. Culver wasn't making any improvements in May, starting the month 0-18 over the first five games.

Angelo Gumbs (Tampa): Gumbs is another player who has plenty of potential, but almost as many question marks. He has not started 2015 well, hitting .177/.235/.210 over seventeen games in April. He struck out seventeen times and walked just five times.

Gosuke Katoh(Charleston): Katoh is one of the Yankees' top prospects, but the 20-year old is struggling mightily with the RiverDogs this season. He went .186/.324/.203 in April, showing an ability to get on base and even make some noise, swiping five bases in six attempts.